Chemical Reactions

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Across
  1. 4. the starting materials of a reaction
  2. 6. tells how many atoms have bonded together
  3. 8. process by which one or more substances change to produce one or more different substances
  4. 10. mass cannot be created or destroyed in a normal chemical reaction
  5. 11. one compound breaks down to form 2 or more simpler substances
  6. 12. 2 or more substance combine to form a new compound
Down
  1. 1. a reaction in which 2 ions switch places, usually forms a gas or precipitate
  2. 2. a combination of chemical symbols and numbers to represent a substance
  3. 3. a reaction in which one element takes the place of another element
  4. 5. the substance that forms in a chemical reaction
  5. 7. a solid produced in a chemical reaction
  6. 9. the number in front of a chemical formula